What was found
#1 ENG EGT ROSE RAPIDLY. #1 ENG EGT YELLOW ALERT FLASHED FOR 30 SECONDS. RETARTED #1 ENG THROTTLE; EGT RETURNED TO NORMAL R/R HPTACC VALVE PER AMM 75-21-01 NO LEAKS; TESTS PASSED
- Difficulty date
- June 29, 2025
- Submitted
- July 1, 2025
- Operation
- Air carrier
- Aircraft
- N239WN
- Make and model
- Boeing 7377H4
- Aircraft serial
- 34714
- Aircraft time
- 62,830 hours, 37,929 cycles
- Engine
- Cfmint CFM567B242
- System (JASC)
- 7520 · Engine Cooling System
- Part
- Valve
- Condition
- Faulted
- Location
- Nr 1 Engine
- Stage of operation
- CL
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.